fix profile selenium spec for rails 3

Change-Id: I6c881f3a73c3c3d7f635b4cd40d2c603c9d82452
Reviewed-on: https://gerrit.instructure.com/31762
Reviewed-by: Cameron Matheson <cameron@instructure.com>
Tested-by: Jenkins <jenkins@instructure.com>
Product-Review: Cody Cutrer <cody@instructure.com>
QA-Review: Cody Cutrer <cody@instructure.com>